Wendy Finnegan is a girl on the cheer leading team that he was in love with but the only things he tried doing was annoying her, hurting her, and grossing her out like an immature child. Eventually, Malcolm was able to convince him to be normal to her which made them become boyfriend and girlfriend. However, she was never seen or mentioned again after this episode, and as of the events of the episode Water Park, where he had a new love interest, their relationship is apparently over.